Warren b



(No Model.)

L. P. MAHLBR.

INVENTOR: jw

ATTORNEYS UNITED STATES PATENT Erica.

LOUIS P. MAHLER, OF NEWV YORK, N. Y.

BRUSH.

SPECIFICATION forming part of Letters Patent No. 445,005, dated January 20, 1891..

i'ipplication filed May 10, 1890- Serial No. 351,2 i1. (N0 model.)

To all whom it may concern.-

13e it known that I, LOUIS P. MAHLER, of the clty, county, and State of New Yoitlghave invented a new and Improved Brush, of which the following is afull, clear, and exact description.

My invention relates to improvements in brushes, and more especially to rotarybrushes, such as are used for finishing'metal castings. In using rotary metal brushes having wire bristles for finishing castings it has been found that the excessive friction resulting from the contact of the metal bristles with the metal to be finished creates so much heat thatthe bristles, after a little use, will break off in the brush-core.

The object of my invention is to obviate this diflicult-y and produce a rotary brush having metal bristles which will stand the strain to which it is necessarily subjected.

To this end myinvention consists in abrush having metal bristles, said bristlesbeing arranged in bunches and having flexible connection with the brush-core. This construction will be hereinafter fully described, and specifically pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar letters of reference indicate corresponding parts in both the figures.

Figure l is a transverse section of a brush embodying my invention on the line 1 1 of Fig. 2, and Fig. 2 is a longitudinal diametrical section on the line 2 2 of Fig. 1.

The brush A has a central core 13, said core having a longitudinal bore B, extending centrally through the same, by means of which the brush may be fixed to a shaft, and is formed with a series of annular rings or flanges, which are provided with a series of eyelets. I

The bristles C are made, preferably, of wire and are attached in bunches to the core B, said bristles being passed through the eyelets in the flanges and doubled upon themselves, so as to extend radially from the brush-core, as will be hereinafter more fully described.

The core 13 is made up of a series of main sections 1) and spaeing-sections E. The secplates 1), preferably of metal, and an intervening layerD of pasteboard,leather, or any suitable material; but the said sections D may be formed in one piece without departing from the principle of my invention.

Between each two adjacent sections D is an annular plate E, which may be of leather, pa steboard, or of any suitable material. The eyelets d are arranged near the periphery of the sections D, and any desired number may be made, although they should not be placed near enough together to materially weaken the section or to bring the bunches of bristles so near together that they will not move in the eyelets. The bristles G are passed through the eyelets and are doubled upon themselves and thereby caused to extend radially from the core. The plates E hold the sections D far enough apart to permit the-bunches of bristles O to oscillate in the eyelets d, and are not large enough to extend to the eyelets (Z. The sections D will thus project beyond the body of the brush -core, forming a series of annular flanges. Each end of the brush-core B is provided with a projecting plate D to protect the outer rows of bristles, and the various parts of the core are firmly united by the bolts F, which extend longitudinally through the core.

The brush, when in use, is mounted upon a rotary shaft in the usual manner, and it Will be seen that when the bristles C are brought in contact with the metal to be finished they will swing or oscillate in the eyelets d and yield sufficiently to prevent their being easily broken.

Having thus fully described my invention I claim as new and desire to secure by Letters Patent 1. A brush consisting, essentially, of a core formed of the sections D and the intervening plates E, the sections D being made up of the outer plates D and the inner portions D and having eyelets cl near the periphery, and the bristles 0, extending through the eyelets d and doubled to extend radially from the brush core, substantially as described.

2. A. brush consisting of a central core a p tle material, the pro3eet1ng plates having eyelets near their peripheries,and metal bristles inserted through the eyelets and doubled upon themselves to extend radially from the brushcore, substantially as described.

LOUIS P. MAHLER.

Witnesses:

WARREN B. HUTCHINSON, EDGAR TATE. 

